Keep your coffee warm wherever you go with our Portable USB Cup Warmer. Simply plug it into any USB port and place your mug on top to keep your drink at the perfect temperature. The compact design makes it easy to take with you to the office, on a road trip, or for outdoor activities. Say goodbye to cold coffee and enjoy the convenience of having a warm beverage at your fingertips. This cup warmer is compatible with most standard sized mugs and is a must-have for any coffee lover on-the-go. Elevate your coffee drinking experience with our Portable USB Cup Warmer.